常见喇叭的结构如图1、图2所示。正常音响为75～80分贝,振频为250～360 Hz。一、喇叭的正确使用(1)喇叭的使用电压要与标称电压相符,以免烧毁线圈。标称电压不明时,可打开花盘(或外罩),视线圈所用漆包线直径以判断之。(2)喇叭应装在车体所留定的位置并加以紧固。为方便调整操作,把柄要呈放在竖直 The structure of a common speaker shown in Figure 1, Figure 2. Normal sound is 75 ~ 80 decibels, vibration frequency is 250 ~ 360 Hz. First, the correct use of speakers (1) the use of the speaker voltage to be consistent with the nominal voltage, so as not to burn the coil. Nominal voltage is unknown, you can open the faceplate (or cover), depending on the coil diameter of the enamel to judge. (2) The horn shall be mounted on the body of the vehicle and secured. To facilitate the adjustment operation, the handle should be placed on the vertical